I sent quite a few ecu's to avpro and have had no major issues. The one thing I didn't like is he failed to mention the IAC damaged part of the board, should have checked it. So the ecu was no longer repairable the 2nd time, but it makes a lovely test ecu and every car seems to idle just fine with it. I believe GZP still sends all their ecu's to avpro as well.